Process for crushing or pulverizing materials.



0. DIETZ & E. GOPPERJB. PROCESS FOR GRUSHING 0B PULVERIZING MATERIALS.

AYPLIGATION FILED MAY 16, 1910.

Patented Oct. '7', 1913.

amasea, y

i is a specification.

UNITED STATES PATENT/OFFICE.

m DI A i 114 Home; bremmxvsnmnaaa comm, mam, assronons r0 FARENFABBIKRN voau. Eamon, BAYER a 00., or 313mm;

omen, HA coerce-Arlen or cerium.

raocnss r02, causative on mavaarzme MATERIALS.

fipeolflcatlon of Letters I'ateut. t v i l. bw iutloaflod unaware emu/r name.

rammed 0st. 7 1191s.

To aliwhomitmoy concern t a Be it known that we, CARL Dunn and Earn, German, citizens of the German Einpire', residing at Leverkusen, near Cologne, Germany, have invented, new and useful- Imrovements in Processes for Crushing or ulverizing Materials, of which the follow.-

ur invention relates to new and useful improvements in a process for crushing on pulverizing' materials, and is particularly designed for-the treatment of roasted or.

' heated materials which are more readily, n; frangiblewhile hot. i

In the'crushmg or pulverizat-ion of chemiscal products such as sulfate, soda, roastedv ores, burned -lime,- *chromates and:- the like which'are obtained by long heating in fur- .naoes are usually removed from the furnace while hot, and even at ared heat, the course heretofore has generally been I to transport them to asuitable place to cool before they -can; be pulverized. .This method is'es'pecially disadvantageous; for the reason that some materials which are very easy to pulveriz'e when highly heated after cooling sat in large masses and become so hard that itis extremely difiicult togrind them without much 'labor and loss of time. lt' has-also been found that when subjecting the mate-,1 rials to the air for cooling they become'de-ig composed, which is particularly true of sul-Z fate of sodium.

It istherefore our-object to overcome the disadvantages encountered in the known I surfaoe of the sheil These ends are prefer- 90 ably a ted that, when rotated theywill serve not only to crusher break up the Ina-i 3 methods o-fproccdure, which object we accomplish' by 1 taking the roasted chemical vproduct at suhstantiallyits roasting' h'eat" and graduallycooling the same from} its. roasting temperature and during the cooling subjecting it to crushing or disintegration whilethe process ofcrushing and disintegrati'on can be more easily efle'cted. I"

' tral section through oneiform of apparatus this purpose, as '0 for Lpraetisi'nQ our invention. Fig. is a .55 section .on-the lm'e 2--2.of Fig.1. Fig. 8 is a longitudinal, vertical, central sectionthrough another apparatus for practising our invention.

Referrlmr to thedrawings by characters .60

ofreference. and narticuleriy to Fig. 1: ,1 designates 1a casing in. which the pulveriza-; tron and the coolimzof the roasted materials, take placm said casing consisting of a horizontally. disposed cylindrical shell having oneend closed by e wall 9,. and the opposite 1 end open, as shown at 3,,the open end being provided with a, feed hopper t through which theinaterial'a to be treated are fed to thecasing'. Any. suitable means may he pm, vided forcrushinn or pulv'erizingthe mate rials after they are insertedwithin the .casmg, saidmeans, as shownin Fig. I, preferably consisting of rotary beaters or blades .which strike the material and thereby break v thedarne masses thereof into small particles. Th s crushing or pulverizing means more specifically consists of a'shaft 5 extending longitudin-ally of the sliell 1 'Within the some, 11nd coincident withthe-longitudinal I axis thereoflsaid shaft havingbearinw at 6-47 on the hopper and end wall respectively,' and saidv shaft being provided with suitable. driving pulleys '8 for connection with a source of power.v Mounted upon this shaft 5 and fixed thereto is a plurality of collars 9, each of which, is provided with a radially extending bladel0,. the free end of which terminates closely adiaeent theinner 'teriul being! treated, but will also serve'jtpy move the same fromthc feed hopper longttudinally of the shell toward a discharge ,openinnll at t-he end of the shell opposite the feed hooper. Inorder to move the material longitudinally of the shell the, Qzriking facesof "the blades are inclinedreui'wardly from their forward edges toward their-rear edges so'that said faces in strikiniz the'jmate rialfn' ove the some before them. Vs do not desire to be limited to any specific incensfor causing the materialto move lengthwise of the cylinder, nor do we limitourselves so con'stn cting the arms 1 as to accomplish ther means may be can ployed for this purpose.

We provide means in connection with the shell 1 for cooling the roasted materials while they are being crushed or broken up, and in Figs. l and 2 this means consists of an exterior shell 12 which may surround such,,for instance, as water, which may be circulated continuously through the chamher, if desired, inlet and outlet pipes 14 and 15 bein shown for this purpose.

Any suita le' meansmay beemployed for closing the space between the upper edges --of the shell 12' and the shell 1, said means,

preferably consisting 'of' a flange 16 ,on the shell 1 upon which rests a closure plate 1'7 projectingover the edge of tliejshell 12', said plate beingsecu'red to saidshell and -As a'ditional meansffor assuring the proper crushing or breaking up for the material, we may provide' within the cylinder longitudinally eirtending loose bars 18 which are thrown around, by the arms. 10 during the rotation of the latter.

for practising the invention, which the cylinder is arranged to revolve, and the,

water jacket is held "stationary, the cylinder revolving within the same, In this for of the apparatus the cylinder is shown at 1 'being connected by internal bars 2Q at its opposite, ends toja rotary shaft 21, which shaft is arranged to rotate in bearings 22, .23.":inz the hopper 24 and an end portion 25,,said hopper and end, ,portion being mainta ned stationary '-and,. the" 1 cylinder arranged to ievolverelative, thereto, suitable lap joints 26 being provided he tween the @parts to Q prevent escape o f the material being treated. The outlet for the material from t het shell 19 is sho'wn at 25*. In this for n uofthe-apparatus for practising the process lie-cooling chamber completely surround L shell and consists ofa cylindrical'body fl of a diameter such that the walljthereof is spaced from the wall, of

the casing, said cylindrical body having-inwardly' directcd, end flanges 28 prov ded withannular flan cs 29 extending at rightangles' thereto an engagin the outer surface of the shell19.. The she I 19 is rovided with over-hanging. flanges 30 whic extend over the ,said'flanges29 and each of which is'formed withan annular recess 31 to re.

- cei v el;a suitableapackingi32 to makes. fluid 1 tight joint between-said cylindrical body- I,

-material is, preferably discharged fro'mthe I furnace',,wh1le in a highly heated condition; 1 directly, into, the hopper"twhereit-wis en said-material ismos t easily frangible,j"-'.- th

V the outlet 11, During this operation-thee? of the same.

In Fig. awe have shown another means;

may be provided with inlet and outlet ports m'ay be maintained through the chamber.

Anysuitable means may be: providedtwithin the chamber for 'breaking 11p? the emtiteri al being treated, suchffor instance, as loose elements's'ucli'. a's'balls, chains, and the like; shown generally at35.

' It is thought that the method of procedure in practising the invention will be apparentn to "those skilled in the art but it might" be" 7b briefly stated, referring to Fig. 1, that the gaged by the ro-tai'yfbeaters10"andsbars dbt and therebv. broken up and pulverizedgvhilei inclined surfaces of: the not only to break-up the material but it move it longitudinally of the ,casingltoward 8cf material is cooled by the water, jacket), 1 so that by theftime. it reaches the.= opening 11 it is not only fullypulverizedbut; cooled sufiiciently to permit convenient handling; In theform shown intF ig, 3,:the. material is, fed to the hopper 24 in}. the-sa'me manner as above-described regarding the lhoppene and is broken up within, the casing. -19-when theilatteris revolved,-.the same cooling-ioperation taking place by 'virtue; of the" coolin jacket 27.; It will. be .noted in thisf0r that thecoolingv effect is, limited to, the-pant oi the casing most distantfromthe furnace I asit may insome instances bedesirablefto first break up the material and subsequently cool thesa ne'. I ,-.4.-; (in: .5

a m-e w' The process ,;of; crr,sh ing, and--"cooling .105: I roasted chemicalproducts and ores which 11' I are easily frangible while hot but diflicultly frangible, whencold which comprises'sub jecting such material to crushing or disintegrat on while still in a highly heated con- 11 dition and bringin such materialiwhile'be ing crushedkor' lsintegrated into contact with" cooling means v keeping the-cooling '1 medium.v free'from. 'rect contact with" the w i material being treated. i 1' In testimony whereof we have hereunto!" set our hands in the presence of two sub scribingv witnesses. CARL DIETZ. tinsel] 1; EMIL GOFFERJE. I [153.] Witnesses: I 1

O'rro Kiimo, Y

CHAS. J. Wmon'tu 

